/*   Copyright 2010 Jonathan Wagner
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */
package com.alienos.collide.uniformgrid;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

import com.alienos.collide.SpatialObject;

final class UniformGridCell<I> {

    private final UniformGridKey key;
    private final Map<I, SpatialObject<I>> objects = new HashMap<I, SpatialObject<I>>();

    public UniformGridCell(UniformGridKey key) {
        this.key = key;
    }

    public void add(SpatialObject<I> o) {
        objects.put(o.getId(), o);
    }

    public void remove(I id) {
        objects.remove(id);
    }

    public SpatialObject<I> query(I id) {
        return objects.get(id);
    }

    public Collection<SpatialObject<I>> objects() {
        return objects.values();
    }

    @Override
    public String toString() {
        return objects.keySet().toString();
    }

    public UniformGridKey getKey() {
        return key;
    }
}
